Ignition switch & ignition circuit

[IanFS]

Hi Guys
I need some advice please.
I'm putting in a new kill switch but want to wire it in via the ignition switch, please see my boat and engine details in my signature.
I think I've got it right but I would like to check with you.
I've enclosed a picture of my switch and according to the manual its pretty much standard wiring.
Am I right in saying that the ignition circuit is the Yellow/Red wire and the Purple wire in the picture. So when the ignition is turned off this cuts the engine?
So I'm guessing if I put the Kill Switch in between the Yellow/Red wire this will do the same job as turning the ignition off?

 

[Scott Danforth]

no, kill switch breaks the purple wire to the motor on an I/O

on a outboard, it grounds the ignition.

the yellow/red wire is your cranking signal

 

[IanFS]

Thanks Scott, so break the purple wire and connect in between?
Cheers, much appreciated.

 

[Chris1956]

Did you get the correct kill switch? You need one that opens, when tripped.

 

[IanFS]

Did you get the correct kill switch? You need one that opens, when tripped.

I think so Chris. This switch has 4 terminals. 2 C terminals and 2 M terminals. When the Lanyard key is inserted, my continuity meter tells me that the 2 C's are open and the 2 M's are closed and visa versa when the Lanyard key is removed. I therefore think that it is made for both Outboard and Inboard engines. So I think I am right to assume that I connect the Purple Wire to both M terminals so that when the Key is removed it'll break the Ignition Circuit as Scott suggested?

 

[Chris1956]

Normally the M terminals are for magneto, which is the ignition system of outboards. However, your description is the opposite of that.
I would expect you want to use the C terminals. You might doublecheck the function of those C terminals.

 

[IanFS]

Thanks Chris, interesting, I would have thought the M (Magneto) terminals are for an Outboard and C (Coil) for IO . I've double checked and definitely when the lanyard is connected/inserted the buzzer sounds on my meter reads 100% continuity between M terminals but nothing on the C terminals. Take the lanyard off and its the other way around. It's a pretty standard switch so I think the terminals may have been accidentally reversed.
Thanks for the advice to double check.